JP2964303B2 - Method for manufacturing small-diameter long sheathed heater - Google Patents
Method for manufacturing small-diameter long sheathed heaterInfo
- Publication number
- JP2964303B2 JP2964303B2 JP24149594A JP24149594A JP2964303B2 JP 2964303 B2 JP2964303 B2 JP 2964303B2 JP 24149594 A JP24149594 A JP 24149594A JP 24149594 A JP24149594 A JP 24149594A JP 2964303 B2 JP2964303 B2 JP 2964303B2
- Authority
- JP
- Japan
- Prior art keywords
- diameter
- heating wire
- coil
- resistance heating
- sheathed heater
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Resistance Heating (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は、コイル状の抵抗発熱線
が、無機絶縁物を介して、細径長尺の金属製保護管内に
埋設され、前記抵抗発熱線の両端にリード線が接続され
るとともに、該金属製保護管の両端開口部がシール性蓋
体で閉じられている細径長尺シーズヒータの製造方法に
関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a coil-shaped resistance heating wire embedded in a small-diameter and long metal protective tube via an inorganic insulator, and lead wires are connected to both ends of the resistance heating wire. The present invention also relates to a method for manufacturing a thin and long sheathed heater in which both ends of the metal protective tube are closed with a sealing lid.
【０００２】詳しくは、長手方向両端にリード線を配
し、細径長尺の金属製保護管内に抵抗発熱線を内蔵し、
熱処理により自在に曲げ加工できる細径長尺シーズヒー
タの製造に好適な発明に関する。More specifically, lead wires are arranged at both ends in the longitudinal direction, and a resistance heating wire is built in a thin and long metal protective tube.
About the invention suitable for the production of small diameter elongated sheath heater can be freely bent by heat treatment.
【０００３】本発明の他の一つは、一本のヒータ内に電
力密度が異なる部位または非発熱部を有する細径長尺シ
ーズヒータの製造に好適な方法に関する。Another aspect of the present invention relates to a method suitable for manufacturing a thin and long sheathed heater having portions having different power densities or non-heating portions in one heater.
【０００４】ここで、細径長尺とは、径が５ｍｍ以内
で、長さが径の略５０倍以上のものをいう。例えば、外
径：１．６ｍｍφ、３．２ｍｍφ、長さ：５００〜１０
０００ｍｍのものを挙げることができる。[0004] Here, the term “small-diameter and long” refers to those having a diameter of 5 mm or less and a length of about 50 times or more the diameter. For example, outer diameter: 1.6 mmφ, 3.2 mmφ, length: 500-10
000 mm.
【０００５】[0005]
【従来の技術】図１に、標準型シーズヒータの一例を示
す。2. Description of the Related Art FIG. 1 shows an example of a standard type sheathed heater.
【０００６】コイル状の抵抗発熱線１１が、無機絶縁物
１３を介して、金属製保護管１５内に埋設され、抵抗発
熱線１１の両端にリード線１７が接続されるとともに、
該金属製保護管１５の両端開口部がシール性蓋体１９で
閉じられている。なお、２０は、絶縁ワッシャである。A coil-shaped resistance heating wire 11 is embedded in a metal protection tube 15 via an inorganic insulator 13, and lead wires 17 are connected to both ends of the resistance heating wire 11.
Both ends of the metal protective tube 15 are closed by a sealing lid 19. In addition, 20 is an insulating washer.
【０００７】そして、上記シーズヒータの製造は、通
常、保護管となる金属製チューブに半焼成の無機管材が
コイル外側に外嵌された抵抗発熱線を挿入後、金属製チ
ューブの両端開口をシール性蓋体で閉じた状態で、金属
製チューブを縮径させて所定径の金属製保護管として製
造していた。この縮径は、抵抗発熱線を保護管内に固定
し、かつ、保護管内の無機絶縁物を高密度充填化するた
めである。（「電気・電子工学大百科事典」第６巻第１
５２頁等参照：株式会社電気書院、１９８３年１０月発
行）[0007] Usually, the sheathed heater is manufactured by inserting a resistance heating wire in which a semi-baked inorganic tube material is fitted outside the coil into a metal tube serving as a protection tube, and then sealing both ends of the metal tube. The metal tube was reduced in diameter in a state of being closed by the lip, and was manufactured as a metal protective tube having a predetermined diameter. This diameter reduction is for fixing the resistance heating wire in the protection tube and for filling the inorganic insulator in the protection tube with high density. ("Electric and Electronic Engineering Encyclopedia" Vol. 6, No. 1
See page 52, etc .: Denki Shoin Co., Ltd., issued October 1983)
【０００８】[0008]
【発明が解決しようとする課題】しかし、上記製造方法
で細径長尺のシーズヒータを製造した場合、コイル内部
が無機絶縁物で、高密度充填されていないため、曲げ加
工したり、使用中に振動を受けたりしたような場合、外
側無機絶縁物が内側へ移動して、無機絶縁物が絶縁作用
を消失するおそれがあった。However, when a sheath heater having a small diameter and a long length is manufactured by the above-described manufacturing method, the inside of the coil is made of an inorganic insulating material and is not densely filled. In such a case, the outer inorganic insulator moves inward, and the inorganic insulator may lose its insulating action.
【０００９】また、金属チューブの縮径（減面）に際し
て、コイルが変形したり、傷ついたりして安定した電力
密度のシーズヒータを得難かった。特に、抵抗発熱線の
コイル内部の無機充填物を高密度化しようとして、減面
率（縮径率：圧縮率）を高めようとした場合、その傾向
は顕著となる。Further, when the diameter (reduction) of the diameter of the metal tube is reduced, the coil is deformed or damaged, so that it is difficult to obtain a sheathed heater having a stable power density. In particular, when an attempt is made to increase the area reduction ratio (diameter reduction ratio: compression ratio) in order to increase the density of the inorganic filler inside the coil of the resistance heating wire, the tendency becomes remarkable.
【００１０】また、この様な細径長尺のシーズヒータ
は、一般に、曲げ加工して面状に配した面状発熱体とし
て使用することが多く、全体の温度分布を均一化させる
ために部位により電力密度を変動させたり、さらには、
板材を介して取り付けるような場合、ボルト近傍は非発
熱部とすることが望ましい。しかし、本発明者らが知る
かぎりにおいて、その様な要求を満たす細径長尺シーズ
ヒータ（以下、単に「シーズヒータ」と称する。）は上
市されていない。In general, such a sheath heater having a small diameter and a long length is often used as a planar heating element which is bent and arranged in a planar shape. To change the power density, or even
In the case of mounting via a plate material, it is desirable that the vicinity of the bolt be a non-heating portion. However, as far as the present inventors know, a small-diameter and long sheathed heater (hereinafter, simply referred to as "sheathed heater") satisfying such a demand has not been put on the market.
【００１１】本発明は、上記にかんがみて、保護管内に
充填された無機絶縁物が、曲げ加工や使用中の振動等に
より絶縁作用が消失するおそれがない安定した電力密度
のシーズヒータを生産性良好に得ることができるシーズ
ヒータの製造方法を提供することを目的とする。In view of the above, the present invention provides a stable power density in which the inorganic insulating material filled in the protective tube does not lose its insulating function due to bending or vibration during use.
And an object thereof is to a sheathed heater provide a method for manufacturing a sheathed heater can get better productivity.
【００１２】[0012]
【課題を解決するための手段】本発明者らは、上記課題
を解決するために、鋭意・開発に努力をした結果、下記
構成のシーズヒータの製造方法に想到した。Means for Solving the Problems The present inventors have made intensive efforts to solve the above-mentioned problems, and as a result, have arrived at a method of manufacturing a sheathed heater having the following structure.
【００１３】コイル状の抵抗発熱線が、無機絶縁物を介
して、細径長尺の金属製保護管内に埋設され、前記抵抗
発熱線の両端にリード線が接続されるとともに、該金属
製保護管の両端開口部がシール性蓋体で閉じられ、抵抗
発熱線が無機絶縁物でコイル外側と共にコイル内側も高
密度充填されてなる細径長尺シーズヒータの製造方法で
あって、両端開口の金属製チューブに、半焼成の中実の
無機線芯材が予め形成されたコイル内に挿通されるとと
もに半焼成の無機管材がコイル外側に外嵌された抵抗発
熱線を挿入後、前記金属製チューブの両端開口をシール
性蓋体で閉じた状態で、前記金属製チューブを縮径させ
で所定径の金属製保護管とすることを特徴とする。[0013] A coil-shaped resistance heating wire is interposed with an inorganic insulator.
Buried in a small-diameter long metal protective tube,
Lead wires are connected to both ends of the heating wire and the metal
The openings at both ends of the protective tube are closed with a sealing lid,
Heating wire is inorganic insulating material and high inside coil as well as outside coil
A method for producing a small-diameter long sheathed heater which is density-filled , wherein a semi-fired solid inorganic wire core is inserted into a coil formed in advance in a metal tube having both ends opened. After inserting a resistance heating wire in which a semi-baked inorganic tube material is fitted to the outside of the coil, a predetermined diameter of the metal tube is reduced by reducing the diameter of the metal tube in a state where both ends of the tube are closed with sealing lids. It is characterized in that it is a metal protective tube having a diameter.
【００１４】[0014]
【実施例】以下、本発明の一例を図２〜４に基ついて、
説明する。既述例と同一部分については、同一図符号と
付して、それらの説明の全部または一部を省略する。An example of the present invention will be described below with reference to FIGS.
explain. The same parts as those in the above-described example are denoted by the same reference numerals, and all or part of the description will be omitted.
【００１５】（１）本発明の製造方法を適用するシーズ
ヒータは、コイル状の抵抗発熱線１１が、無機絶縁物１
３を介して、細径長尺の金属製保護管１５内に埋設さ
れ、抵抗発熱線１１の両端にリード線１７が接続される
とともに、該金属製保護管１５の両端開口部がシール性
蓋体１９で閉じられている。(1) Seeds to which the manufacturing method of the present invention is applied
As for the heater, the coil-shaped resistance heating wire 11 is made of an inorganic insulator 1.
3, the lead wire 17 is connected to both ends of the resistance heating wire 11, and the opening of both ends of the metal protection tube 15 is sealed with a sealing lid. It is closed by body 19.
【００１６】ここで、抵抗発熱線１１は、通常、ニクロ
ム製とするが、白金、タングステン、クロム−Ａｌ、タ
ンタル等であってもよい。Here, the resistance heating wire 11 is usually made of nichrome, but may be made of platinum, tungsten, chromium-Al, tantalum or the like.
【００１７】無機絶縁物１３は、通常、マグネシアを使
用するが、ボロンナイト等であってもよい。The inorganic insulator 13 usually uses magnesia, but may be boronite or the like.
【００１８】金属製保護管１５の材料は、通常、ステン
レスを使用するが、他の金属であってもよい。The material of the metal protection tube 15 is usually stainless steel, but other metals may be used.
【００１９】リード線（導線）１７は、例えば、ニクロ
ムの太線（例えば０．５ｍｍφ）を使用する。As the lead wire (conductor) 17, for example, a thick nichrome wire (for example, 0.5 mmφ) is used.
【００２０】本発明の製造方法で製造する細径長尺シー
ズヒータは、無機絶縁物１３で抵抗発熱線１１のコイル
外側と共にコイル内側も高密度充填されている。The small diameter elongated Sea <br/> Zuhita be manufactured by the manufacturing method of the present invention, the coil inner with coils outside of the resistance heating wire 11 by the inorganic insulating material 13 is also densely packed.
【００２１】抵抗発熱線１１であるコイル内側も高密度
充填されているため、保護管１５内に充填された無機絶
縁物が、曲げ加工や使用中の振動等により絶縁作用が消
失するおそれがない。Since the inside of the coil, which is the resistance heating wire 11, is also densely filled, the inorganic insulating material filled in the protective tube 15 does not lose its insulating function due to bending or vibration during use. .
【００２２】（３）ここで、抵抗発熱線１１Ａが、コイ
ル巻きピッチの異なる２種以上の抵抗発熱線要素１１
ａ、１１ｂ及び、ニクロム太線等からなる非発熱線要素
１８の各要素から少なくとも２種類を選択して接続した
ものからなり、電力密度が所望範囲で変動または実質的
にゼロ（非発熱）である構成とすることもできる。(3) Here, the resistance heating wire 11A is composed of two or more resistance heating wire elements 11 having different coil winding pitches.
a, 11b, and at least two types of non-heat-generating wire elements 18 composed of thick nichrome wires and the like are connected and selected, and the power density fluctuates within a desired range or is substantially zero (non-heat-generating). It can also be configured.
【００２３】ここで、抵抗発熱線要素に使用するコイル
の仕様は、例えば、線径０．１ｍｍ、コイル径０．５ｍ
ｍのニクロム線の場合、巻きピッチが線径の２．５〜１
２倍の間、即ち、２．５〜１．２ｍｍの間で適宜選択し
て使用する。Here, the specification of the coil used for the resistance heating wire element is, for example, a wire diameter of 0.1 mm and a coil diameter of 0.5 m.
m, the winding pitch is 2.5 to 1 of the wire diameter.
It is appropriately selected and used between two times, that is, between 2.5 and 1.2 mm.
【００２４】（３）次に、上記構成のシーズヒータの製
造方法を説明する。(3) Next, a method of manufacturing the sheathed heater having the above configuration will be described.
【００２５】両端開口の金属製チューブ１５Ａに、半焼
成の中実の無機線芯材２１が予め形成されたコイル内に
挿通されるとともに半焼成の無機管材２３がコイル外側
に外嵌された抵抗発熱線１１Ａを挿入後、金属製チュー
ブ１５Ａの両端開口をシール性蓋体１９Ａで閉じた状態
で、金属製チューブ１５Ａを縮径させて所定径の金属製
保護管１５とする。 一本のヒータ内に電力密度が異な
る部位または非発熱部を有するシーズヒータを製造しよ
うとする場合、図２に示す如く、ニクロム太線等からな
る非発熱線要素１８に、両側から、コイル巻きピッチの
異なる抵抗発熱線要素１１ａ、１１ｂをスポット溶接し
た後、抵抗発熱線要素に半焼成の無機芯材２１を挿通さ
せ、さらに、両端に、リード線１７を接続後、無機管材
２３を外嵌する。こうした状態で、金属製チューブ１５
Ａに挿入し、両端をリード線１７を部分突出させた状態
でシール製蓋体（例えば、シリコーンゴム製）１９で閉
じる。A semi-fired solid inorganic wire core material 21 is inserted into a coil formed in advance in a metal tube 15A having openings at both ends, and a semi-fired inorganic tube material 23 is fitted outside the coil. After inserting the heating wire 11A, the metal tube 15A is reduced in diameter while the openings at both ends of the metal tube 15A are closed with the sealing lids 19A to form a metal protective tube 15 having a predetermined diameter. When manufacturing a sheathed heater having portions having different power densities or non-heating portions in one heater, as shown in FIG. 2, a coil winding pitch is applied from both sides to a non-heating wire element 18 made of a thick nichrome wire or the like. After the spot heating of the resistance heating wire elements 11a and 11b different from each other, the semi-fired inorganic core material 21 is inserted through the resistance heating wire elements, and further, the lead wires 17 are connected to both ends, and then the inorganic pipe material 23 is externally fitted. I do. In this state, the metal tube 15
A, and the both ends are closed with a seal lid (for example, made of silicone rubber) 19 with the lead wires 17 partially projecting.
【００２６】なお、抵抗発熱線要素１１ａ、１１ｂ相互
を直接接続する場合は、接続端部の２〜３巻分を、スポ
ット溶接等で巻きがほつれない様に固定しておくことが
望ましい。When the resistance heating wire elements 11a and 11b are directly connected to each other, it is desirable that two or three turns of the connection end be fixed by spot welding or the like so that the turns are not frayed.
【００２７】この内部に抵抗発熱線１１Ａ、無機線芯材
２１、無機管材２３を充填した金属製チューブ１５Ａ
を、カシメ装置（減面装置）の分割カシメダイス３１で
縮径させて無機管材を圧縮固形化させる。A metal tube 15A in which a resistance heating wire 11A, an inorganic wire core material 21, and an inorganic pipe material 23 are filled.
Is reduced by a divided caulking die 31 of a caulking device (surface reduction device) to compress and solidify the inorganic pipe material.
【００２８】この際、コイル線材である抵抗発熱線１１
（１１Ａ）の、コイル内部には無機線芯材２１が挿入さ
れているため、コイル内部は高密度充填化されると共
に、抵抗発熱線１１が変形して傷つくおそれがない。こ
のため、発熱線の傷つきに伴う抵抗率の増大がない。従
って、設定出力のシーズヒータを製造するに際して、試
行錯誤する必要がないとともに、設定出力のシーズヒー
タをバラツキ小さく製造でき、生産性の向上に寄与す
る。At this time, the resistance heating wire 11 which is a coil wire material
In (11A), since the inorganic wire core material 21 is inserted inside the coil, the inside of the coil is densely packed, and there is no possibility that the resistance heating wire 11 is deformed and damaged. Therefore, there is no increase in resistivity due to the damage of the heating wire. Therefore, when manufacturing the sheathed heater having the set output, it is not necessary to perform trial and error, and the sheathed heater having the set output can be manufactured with a small variation, which contributes to an improvement in productivity.
【００２９】（４）次に、上記実施例の使用態様を説明
する。(4) Next, the usage of the above embodiment will be described.
【００３０】図４に示す如く、波形に曲げ加工して面状
とし、取り付け板２７を介して所定部位に取り付けよう
としとし、ボルト孔２９が配される近傍の前後端部を非
発熱部Ａ（斜線表示）としたり、また、図５に示す如
く、螺旋形に曲げ加工して面状とし、全体を温度分布を
均一化しようとした場合、放熱し易い外側部を高発熱部
Ｈ（網目表示）とすることができる。即ち、不要な部位
の発熱をカットでき、また、発熱盤の温度分布の均一化
が可能となり、熱効率の向上に寄与する。As shown in FIG. 4, it is bent into a corrugated shape to form a planar shape, is to be mounted on a predetermined portion via a mounting plate 27, and the front and rear ends near the bolt holes 29 are arranged at the non-heating portion A. (Shown by oblique lines) or, as shown in FIG. 5, when the sheet is bent into a helical shape to form a planar shape and the entire temperature distribution is to be made uniform, the outer portion which is easy to radiate heat is formed by the high heat generating portion H (mesh mesh). Display). That is, heat generation at unnecessary portions can be cut off, and the temperature distribution of the heat generation plate can be made uniform, which contributes to improvement in thermal efficiency.
【００３１】[0031]
【発明の作用・効果】本発明のシーズヒータの製造方法
は、上記のような構成により、下記のような作用・効果
を奏する。Operation and effect of the present invention The method of manufacturing the sheathed heater of the present invention has the following operation and effect with the above-described configuration.
【００３２】本発明の細径長尺シーズヒータの製造方法
は、両端開口の金属製チューブに、半焼成の中実の無機
線芯材が予め形成されたコイル内に挿通されるとともに
半焼成の無機管材がコイル外側に外嵌された抵抗発熱線
を挿入後、金属製チューブの開口側をシール性蓋体で閉
じた状態で、金属製チューブを縮径させて所定径の金属
製保護管とする構成により、シーズヒータを、安定した
電力密度で生産性良好に得ることができる。コイル線材
の中に、中実の無機線芯材が充満しているため、発熱線
保持体と保護管の間に充填した粉末を圧縮固形化してチ
ューブ状無機絶縁物とする際、コイル線材の変形がなく
てコイル状線材が傷付きにくい。従って、本発明のシー
ズヒータは、電力密度の高く、且つ、耐久性に問題が発
生しがたい。According to the method of manufacturing a sheathed heater having a small diameter and a long length according to the present invention , a semi-baked solid inorganic wire core material is inserted into a coil formed in advance in a metal tube having openings at both ends. At the same time, after inserting the resistance heating wire in which the semi-fired inorganic tube material is fitted to the outside of the coil, the metal tube is reduced in diameter while the opening side of the metal tube is closed with a sealing lid to reduce the diameter of the metal tube. With the configuration of the protection tube, the sheathed heater can be obtained with stable power density and good productivity. Since the coil wire is filled with a solid inorganic wire core , when the powder filled between the heating wire holder and the protective tube is compressed and solidified into a tubular inorganic insulator, the coil wire is There is no deformation and the coiled wire is hardly damaged. Therefore, the sheathed heater of the present invention has a high power density and hardly causes a problem in durability.
【００３３】本発明の方法で製造したシーズヒータは、
上記の如く、抵抗発熱線が無機絶縁物でコイル外側と共
にコイル内側も高密度充填されてなる構成なので、曲げ
加工や使用中の振動等により、外側無機絶縁物が内側へ
移動して、無機絶縁物が絶縁作用を消失するおそれがな
い。 The sheathed heater manufactured by the method of the present invention comprises:
As described above, the resistance heating wire is an inorganic insulator and
Since the inside of the coil is also densely packed,
Outer inorganic insulator goes inward due to vibration during processing or use
There is no danger that the inorganic insulator will lose its insulating action
No.
【００３４】また、本発明のシーズヒータの製造方法
は、コイル巻きピッチの異なる２種以上の抵抗発熱線要
素、及び、非発熱線要素の各要素から少なくとも２種類
を選択して接続したものからなり、電力密度が所望範囲
で変動または実質的にゼロ（非発熱）である構成のシー
ズヒータを製造するのに好適である。当該構成のシーズ
ヒータは、一本のヒータ内に電力密度が異なる部位また
は非発熱部を有するものとすることが可能となる。従っ
て、面状発熱体として使用しようとする場合、不要な部
位の発熱をカットでき、また、面状発熱体の温度分布の
均一化が可能となり、熱効率及び性能の向上化に寄与す
る。Further, a method of manufacturing the sheathed heater of the present invention.
Requires two or more resistance heating wires with different coil winding pitches
Element and at least two types from each element of the non-heating line element
The power density is within the desired range.
In a configuration that fluctuates or is substantially zero (no heat generation)
This is suitable for manufacturing a zoom heater. Seeds of the configuration
The heaters are located at different power densities or within a single heater.
Can have a non-heat generating portion. Follow
When trying to use it as a sheet heating element,
Heat generation, and the temperature distribution of the planar heating element
Uniformization is possible, contributing to improvement of thermal efficiency and performance
You .
【図１】本発明の従来技術である標準型シーズヒータの
一例を示す縦断面図FIG. 1 is a longitudinal sectional view showing an example of a standard type sheathed heater according to the prior art of the present invention.
【図２】本発明のシーズヒータを製造する場合に使用す
る抵抗発熱線の部分斜視図。FIG. 2 is a partial perspective view of a resistance heating wire used when manufacturing the sheathed heater of the present invention.
【図３】本発明のシーズヒータの製造における縮径工程
途中を示す概略断面図。FIG. 3 is a schematic cross-sectional view showing the middle of the diameter reducing step in the production of the sheathed heater of the present invention.
【図４】本発明のシーズヒータを面状発熱体として使用
する場合の一態様を示す平面図。FIG. 4 is a plan view showing one embodiment in which the sheathed heater of the present invention is used as a planar heating element.
【図５】同じく他の態様を示す平面図。FIG. 5 is a plan view showing another embodiment.
１１、１１Ａ…抵抗発熱線 １１ａ、１１ｂ…抵抗発熱線要素 １３…無機絶縁物 １５…金属製保護管 １５Ａ…金属製チューブ １７…リード線 １８…非発熱線要素 １９…シール性蓋体 ２１…無機線芯材 ２３…無機管材 ３１…分割カシメダイス11, 11A: Resistance heating wire 11a, 11b: Resistance heating wire element 13: Inorganic insulator 15: Metal protection tube 15A: Metal tube 17: Lead wire 18: Non-heating wire element 19: Sealing lid 21: Inorganic Wire core material 23 ... Inorganic pipe material 31 ... Split caulking die
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 昭57−34688（ＪＰ，Ａ) 特開 昭62−186491（ＪＰ，Ａ) 特公 昭26−7643（ＪＰ，Ｂ１) 特公 昭32−1695（ＪＰ，Ｂ１) 特公 昭27−583（ＪＰ，Ｂ１) 実公 昭51−30682（ＪＰ，Ｙ１) (58)調査した分野(Int.Cl.6，ＤＢ名) H05B 3/48 ────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-57-34688 (JP, A) JP-A-62-186491 (JP, A) JP-B 26-7643 (JP, B1) JP-B 32-32 1695 (JP, B1) JP-B-27-583 (JP, B1) JP-B-51-30682 (JP, Y1) (58) Fields investigated (Int. Cl. 6 , DB name) H05B 3/48
Claims (2)
介して、細径長尺の金属製保護管内に埋設され、前記抵
抗発熱線の両端にリード線が接続されるとともに、該金
属製保護管の両端開口部がシール性蓋体で閉じられ、抵
抗発熱線が無機絶縁物でコイル外側と共にコイル内側も
高密度充填されてなる細径長尺シーズヒータの製造方法
であって、 両端開口の金属製チューブに、半焼成の中実の無機線芯
材が予め形成されたコイル内に挿通されるとともに半焼
成の無機管材がコイル外側に外嵌された抵抗発熱線を挿
入後、前記金属製チューブの両端開口をシール性蓋体で
閉じた状態で、前記金属製チューブを縮径させて所定径
の金属製保護管とすることを特徴とする細径長尺シーズ
ヒータの製造方法。The coil-shaped resistance heating wire is made of an inorganic insulating material.
And embedded in a small and long metal protective tube,
Lead wires are connected to both ends of the anti-heating wire,
The openings at both ends of the metal protection tube are closed with a sealing lid,
The anti-heating wire is an inorganic insulator and the inside of the coil as well as the outside of the coil
A method for producing a small-diameter and long sheathed heater filled at high density , wherein a semi-baked solid inorganic wire core material is inserted into a coil formed in advance in a metal tube having both ends opened, After inserting the resistance heating wire in which the fired inorganic tubular material is fitted to the outside of the coil, the metal tube is reduced in diameter in a state where both ends of the metal tube are closed with sealing lids, and the metal tube is reduced in diameter to a predetermined diameter. A method for manufacturing a small-diameter and long sheathed heater, which is a protective tube made of a material.
コイル巻きピッチの異なる２種以上の抵抗発熱線要素、
及び、非発熱線要素の各要素から少なくとも２種類を選
択して接続したものからなり、電力密度が所望範囲で変
動または実質的にゼロ（非発熱）であることを特徴とす
る細径長尺シーズヒータの製造方法。2. The resistance heating wire according to claim 1,
Two or more resistance heating wire elements with different coil winding pitches,
And a small-diameter elongated member, which is formed by selecting and connecting at least two types from each of the non-heating line elements, and wherein the power density fluctuates within a desired range or is substantially zero (non-heating). Manufacturing method of sheathed heater.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24149594A JP2964303B2 (en) | 1994-10-05 | 1994-10-05 | Method for manufacturing small-diameter long sheathed heater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24149594A JP2964303B2 (en) | 1994-10-05 | 1994-10-05 | Method for manufacturing small-diameter long sheathed heater |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH08106973A JPH08106973A (en) | 1996-04-23 |
| JP2964303B2 true JP2964303B2 (en) | 1999-10-18 |
Family
ID=17075178
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP24149594A Expired - Fee Related JP2964303B2 (en) | 1994-10-05 | 1994-10-05 | Method for manufacturing small-diameter long sheathed heater |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2964303B2 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4530896B2 (en) * | 2005-03-31 | 2010-08-25 | 株式会社ノリタケカンパニーリミテド | Plate type far infrared heater for vacuum heating furnace |
| JP5592706B2 (en) * | 2010-06-02 | 2014-09-17 | 助川電気工業株式会社 | Sheath heater lead wire connection terminal |
| KR102537888B1 (en) * | 2022-11-09 | 2023-05-26 | 김성근 | Low-power, high-efficiency, wet-only heat transfer tube for carbon reduction and manufacturing method thereof |
-
1994
- 1994-10-05 JP JP24149594A patent/JP2964303B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH08106973A (en) | 1996-04-23 |
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